Thought about powder coating the stock bar at $40.... Been my experience that any painted bar is gonna scratch and I'm not sure about the FZ controls but on most makes I'd still have to drill holes in a new handlebar for the controls. Powdercoat would save a bit of that aggravation.
Or grind the locating tabs off the controls, which is what I'd do.
I did that on the Bandit when I put the Daytona Handlebar on it. I didn't have any problems but I was always concerned they would get loose. Any problems with the FZ8 ?